package lab03.test08;

import java.io.*;

/**
 * Created by 123 on 2017/12/11.
 */
public class Test {
    public static void main(String[] args) {
        String path1 = "D:\\dev\\shiyan\\Test08\\1.txt";
        String path2 = "D:\\dev\\shiyan\\Test08\\2.txt";
        String path3 = "D:\\dev\\shiyan\\Test08\\3.txt";

        try {

            InputStreamReader reader = new InputStreamReader(new FileInputStream(path1));
            BufferedReader buffer = new BufferedReader(reader);//读1.txt内容

            InputStreamReader reader1 = new InputStreamReader(new FileInputStream(path2));
            BufferedReader buffer1 = new BufferedReader(reader1);//读2.txt内容

            OutputStreamWriter last = new OutputStreamWriter(new FileOutputStream(path3));
            BufferedWriter writer = new BufferedWriter(last);//写3.txt内容

            String line1 = buffer.readLine();//
            String line2 = buffer1.readLine();
            while (true) {

                //4种情况 1.两个都有内容 2.1有2没有 3.2有1没有 4.都没有
                if (line1 != null && line2 != null) {//1
                    System.out.println(line1);
                    System.out.println(line2);
                    writer.write(line1);//写1
                    writer.newLine();
                    writer.write(line2);//写2
                    writer.newLine();
                    writer.flush();
                    line1 = buffer.readLine();
                    line2 = buffer1.readLine();
                } else if (line1 == null && line2 != null) {//3
                    System.out.println(line2);
                    writer.write(line2);
                    writer.newLine();
                    writer.flush();
                    line2 = buffer1.readLine();
                } else if (line1 != null && line2 == null) {//2
                    System.out.println(line1);
                    writer.write(line1);
                    writer.newLine();
                    writer.flush();
                    line1 = buffer.readLine();
                } else {//4
                    break;//终止死循环
                }
            }
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }


    }
    }

